U.S. Army - Army of the Potomac

First Army Corps

Major General John Newton

Discontinued and units merged into the Fifth Army Corps March 24, 1864

First Division

Brigadier General Lysander Cutler (until 3/20)

Brigadier General J.C. Rice (after 3/20)

1st Brigade

Colonel W. W. Robinson

2nd Brigade

Brigadier General J.C. Rice

Second Division

Brigadier General J.C. Robinson

1st Brigade

Colonel S. H. Leonard

2nd Brigade

Brigadier General H. Baxter

Third Division

Brigadier General J.R. Kenly

1st Brigade

Colonel E. L. Dana

2nd Brigade

Colonel N. T. DuShane

Artilery Brigade

Maryland Battery A

5th Maine Battery

to Army Artillery Reserve

Battery E, 1st New York Artillery

Battery L, 1st New York Artillery

Battery H, 1st New York Artillery

Battery B, 1st Pennsylvania Artillery

Battery B, 4th United States Artillery